Planetary Solids Older than Earth

  title={Planetary Solids Older than Earth},
  author={Donald D. Clayton},
  pages={617 - 617}
  • D. Clayton
  • Published 28 April 2000
  • Geology, Physics
  • Science
David Stevenson in his Pathways of Discovery Essay “Planetary science: A space odyssey” (11 Feb., p. 997) surveys the role that planetary science has played and is playing in the evolution of the world views held by modern humankind, but he does not include one new window of wide philosophic interest that is so stunning as to contribute to the immense sweep of his canvas. Pieces of small planets fall to the ground (meteorites) containing within them small, solid particles that are themselves…